San Diego  Lifeguards and the Coast Guard resumed searching Sunday morning for a young man feared drowned off the coast at Torrey Pines. They ended their search in the afternoon with no sign of the man.

The man, believed to be about 21 years old, was in the water at the north end of Torrey Pines State Reserve with a 19-year-old woman about 6:25 p.m. Saturday when the two began to have trouble, State Park Lifeguard Supervisor James Bilz said.

“Witnesses saw them in the water struggling,” Bilz said.

A park ranger, who jumped into the water fully clothed, and a state lifeguard quickly searched for the couple, Bilz said. Lifeguard Micah Moore spotted a boogie board and began making circles around it and found the woman submerged and unconscious under several feet of water, Bilz said.

She was pulled to the beach where CPR was performed and then taken to Scripps Memorial Hospital in La Jolla, where she is in intensive care, Bilz said. Her belongings and her identification were found on the beach and her family was notified. No identification was found for the man.

In the meantime, rescue crews, aided by lifeguards from Del Mar and San Diego, scoured the surf for her companion as the San Diego Fire-Rescue Department’s helicopter circled overhead. “They kept searching feverishly,” Bilz said.

The effort was called off as night fell and the fog rolled in, Bilz said.

Searchers, including six scuba divers, were back in the water about 7 a.m. Sunday conducting a methodic search. They were joined by a Coast Guard helicopter and a boat. However, chances that the man will be found alive are not good, officials said.

“We’ll give it every shot we can,” state lifeguard Ed Vodrazka said. “After so many hours it becomes more and more difficult and the odds of finding him are far less,” he said

The pair were in the water under “very dangerous conditions,” Vodrazka said.

Lifeguards had ended their duty for the day, the water was a cold 58 degrees and there were dangerous rip currents that would have pulled them out to sea, Vodrazka said.

“The combination of these three elements is what caused this whole thing,” he said.

Additionally, neither victim had on wet suits, Vodrazka said.

The name of the woman has not been released. Officials believe she is from San Diego County. The man’s identity is still not known.